Passive amplifier

Another take on a couple of passive amps. I was quite surprised how much difference they can make. Easy gifts for friends and family. iphone 6 model. [image][image][image]

Wooden phone speaker made from oak wood with passive phone amplifier effect will not only amplify our favorite music but also improve it's sound quality. Phone speaker can be personalized with any custom engraving that makes it perfect and meaningful gift for Christmas, Birthday, Anniversary or any other occasion. Amplifying music from your smartphone up to 3 times without using any sources of power. You even can charge your phone while it stands in speaker's dock. Amplifier is fully…

Passive amp

Rockler Woodworking and Hardware has introduced the Koostik Kit, a free-standing wooden cradle that fits any model iPhone and uses passive amplification to boost the iPhone's sound to a higher volume.

Passive amp

This is a mishmash of ideas from Pinterest . Using only scrap timber and old paint samples. Passive speaker

3D printed passive amplifier with credit card kickstand for iPhone 4. The horn like form passively (with no additional electronics or power) amplifies the iPhone's internal speaker. To minimize material used during printing and increase portability th…

You don't need bluetooth or an outlet to amplify your the sound from your phone, just build this passive amplifier featured in Issue 102 of Woodcraft Magazine.

Passive Amp ideas 3.